Elexhere

The Cassagotchi Is a 3D-Printable, Arduino Nano-Powered Tamagotchi Clone You Can Build Yourself - Hackster.iohttps://www.hackster.io/news/the-cassagotchi-is-a-3d-printable-arduino-nano-powered-tamagotchi-clone-you-can-build-yourself-da985d3d14de

A plastic egg houses your very own digital pet, like it's the 1990s all over again.

This Whirly 100-Filament LED Lamp Is So Good - Hackster.iohttps://www.hackster.io/news/this-whirly-100-filament-led-lamp-is-so-good-ff8a22b7cda4

Nick of the Nick Electronics YouTube channel built a very ambitious accent lamp with spinning LED discs.

Five Different Styles Of Cardboard Hinges | Hackadayhttps://hackaday.com/2026/04/30/five-different-styles-of-cardboard-hinges/

One doesn’t generally associate cardboard with structural components like hinges, but [Itoshige Studio] assures us that you can absolutely create hinges out of this ubiquitous material. In to…

A Guide To CubeSat Mission And Bus Design | Hackadayhttps://hackaday.com/2026/04/28/a-guide-to-cubesat-mission-and-bus-design/

Space
Design

If you mention the word bus, you might think of public transportation or, more likely for us, a way to connect things together. But in the satellite world, the bus is the part of a vehicle that sup…

Your CPU Has More Registers Than You'd Think | Shreeyash's Bloghttps://fp32.org/register_renaming.html

Cpu

Shreeyash's Blog

3D Print Full-Color Photos on a Regular Old Filament Printer - Hackster.iohttps://www.hackster.io/news/3d-print-full-color-photos-on-a-regular-old-filament-printer-e40b1ba784d8

Primed3D is a tool that will let you print in full color(ish) using a regular old filament 3D printer.

Reviving Nintendo’s Early Arcade Game, Wild Gunman | Hackadayhttps://hackaday.com/2026/04/24/reviving-nintendos-early-arcade-game-wild-gunman/

There’s retrogaming, and then there’s retro gaming. This next project falls into the second category, as [Callan] of 74XX Arcade Repair digs into the original Wild Gunman, first release…

GitHub - TeamOpenFIRE/OpenFIRE-App: Reference configuration/testing app for the OpenFIRE project, built in Qt/C++. · GitHubhttps://github.com/TeamOpenFIRE/OpenFIRE-App

Reference configuration/testing app for the OpenFIRE project, built in Qt/C++. - TeamOpenFIRE/OpenFIRE-App

DIY Smart Button Gets Surprisingly Complicated | Hackadayhttps://hackaday.com/2026/04/22/diy-smart-button-gets-surprisingly-complicated/

There’s a reason that the standards specifications for various wireless communications protocols are extremely long and detailed. [Made by Dennis] found this out first hand when he decided to…

Build a Giant 2,500-LED Wall on a Budget - Hackster.iohttps://www.hackster.io/news/build-a-giant-2-500-led-wall-on-a-budget-ebcb2cbd4e76

Chris Maher made a massive, wall-sized 2,500-LED matrix without breaking the bank using an ingenious design powered by LED strips.

Check Out This 7-Segment Display That Runs on Air - Hackster.iohttps://www.hackster.io/news/check-out-this-7-segment-display-that-runs-on-air-8562ef9e05e3

Clock
Vacuum

This air-powered 7-segment display uses pneumatic "transistors" and vacuum pressure to physically transform the segments.

Painting the Time on Flip Sequins - Hackster.iohttps://www.hackster.io/news/painting-the-time-on-flip-sequins-d57d924a2967

Clock
Sequin

Sequino is a robotic clock that swaps pixels for flip sequins, using an H-bot system to "paint" the time on a shimmering canvas.

Implementing PCIe Over Fiber Using SFP Modules | Hackadayhttps://hackaday.com/2026/04/11/implementing-pcie-over-fiber-using-sfp-modules/

Pcie
Sfp

Although we can already buy commercial transceiver solutions that allow us to use PCIe devices like GPUs outside of a PC, these use an encapsulating protocol like Thunderbolt rather than straight P…

This $15 Breadboard Upgrade Makes Life Easier - Hackster.iohttps://www.hackster.io/news/this-15-breadboard-upgrade-makes-life-easier-aa2ffa6e96c2

Power
Usb-c

Power your breadboard anywhere with the BrødBoost-C2, a tiny, USB-C powered regulator delivering clean 3.3V/5V power for just $14.99.

Easily Add Texture to Your 3D Prints with the Free BumpMesh Web Tool - Hackster.iohttps://www.hackster.io/news/easily-add-texture-to-your-3d-prints-with-the-free-bumpmesh-web-tool-c25191dc844c

Stefan from CNC Kitchen created the BumpMesh web tool to make 3D model texturing super easy.

Turning Dollar-Store Foam Into a High-Tech FPV Plane - Hackster.iohttps://www.hackster.io/news/turning-dollar-store-foam-into-a-high-tech-fpv-plane-bb837c14dff6

Airplane

With just a few basic components like a Seeed Studio XIAO ESP32S3, you can turn a $2 toy glider into a high-tech FPV airplane.

Playful ‘Space Dice’ Kit Shows Off Clever Design | Hackadayhttps://hackaday.com/2026/03/28/playful-space-dice-kit-shows-off-clever-design/

[Tommy] at Oskitone has been making hardware synth kits for years, and his designs are always worth checking out. His newest offering Space Dice is an educational kit that is a combination vintage …

Add Laser Engraving to Your Desk for Just $64 - Hackster.iohttps://www.hackster.io/news/add-laser-engraving-to-your-desk-for-just-64-92e7312e464e

Laser

Build your own mini laser engraver for $64! This ATmega328-powered project burns detailed designs into wood, leather, and paper.

The Insane Engineering Behind a DIY Real-Time Spray Paint Mixer - Hackster.iohttps://www.hackster.io/news/the-insane-engineering-behind-a-diy-real-time-spray-paint-mixer-b6dfbad35568

Paint

Sandesh Manik wanted a kind of real-time color-mixing system for spray paint and bringing that to life required some insane engineering.

Build This Open-Source Graphics Calculator | Hackadayhttps://hackaday.com/2026/03/23/build-this-open-source-graphics-calculator/

Graphics calculators are one of those strange technological cul-de-sacs. They rely on outdated technology and should not be nearly as expensive as they are, but market effects somehow keep prices w…